diff --git a/src/lib/es2017.object.d.ts b/src/lib/es2017.object.d.ts
index 1d8a52da758a8..4014e8c29278a 100644
--- a/src/lib/es2017.object.d.ts
+++ b/src/lib/es2017.object.d.ts
@@ -3,7 +3,7 @@ interface ObjectConstructor {
      * Returns an array of values of the enumerable properties of an object
      * @param o Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
      */
-    values<T>(o: { [s: string]: T }): T[];
+    values<T>(o: { [s: string]: T } | { [n: number]: T }): T[];
 
     /**
      * Returns an array of values of the enumerable properties of an object
@@ -15,7 +15,7 @@ interface ObjectConstructor {
      * Returns an array of key/values of the enumerable properties of an object
      * @param o Object that contains the properties and methods. This can be an object that you created or an existing Document Object Model (DOM) object.
      */
-    entries<T>(o: { [s: string]: T }): [string, T][];
+    entries<T>(o: { [s: string]: T } | { [n: number]: T }): [string, T][];
 
     /**
      * Returns an array of key/values of the enumerable properties of an object
diff --git a/tests/baselines/reference/useObjectValuesAndEntries1.types b/tests/baselines/reference/useObjectValuesAndEntries1.types
index 1b537ed063d82..6ea45385bbcd9 100644
--- a/tests/baselines/reference/useObjectValuesAndEntries1.types
+++ b/tests/baselines/reference/useObjectValuesAndEntries1.types
@@ -10,9 +10,9 @@ var o = { a: 1, b: 2 };
 for (var x of Object.values(o)) {
 >x : number
 >Object.values(o) : number[]
->Object.values : { <T>(o: { [s: string]: T; }): T[]; (o: any): any[]; }
+>Object.values : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): T[]; (o: any): any[]; }
 >Object : ObjectConstructor
->values : { <T>(o: { [s: string]: T; }): T[]; (o: any): any[]; }
+>values : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): T[]; (o: any): any[]; }
 >o : { a: number; b: number; }
 
     let y = x;
@@ -23,25 +23,25 @@ for (var x of Object.values(o)) {
 var entries = Object.entries(o);  // <-- entries: ['a' | 'b', number][]
 >entries : [string, number][]
 >Object.entries(o) : [string, number][]
->Object.entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>Object.entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >Object : ObjectConstructor
->entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >o : { a: number; b: number; }
 
 var entries1 = Object.entries(1); // <-- entries: [string, any][]
 >entries1 : [string, any][]
 >Object.entries(1) : [string, any][]
->Object.entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>Object.entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >Object : ObjectConstructor
->entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >1 : 1
 
 var entries2 = Object.entries({a: true, b: 2}) // ['a' | 'b', number | boolean][]
 >entries2 : [string, number | boolean][]
 >Object.entries({a: true, b: 2}) : [string, number | boolean][]
->Object.entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>Object.entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >Object : ObjectConstructor
->entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >{a: true, b: 2} : { a: true; b: 2; }
 >a : boolean
 >true : true
@@ -51,8 +51,8 @@ var entries2 = Object.entries({a: true, b: 2}) // ['a' | 'b', number | boolean][
 var entries3 = Object.entries({}) // [never, any][]
 >entries3 : [string, {}][]
 >Object.entries({}) : [string, {}][]
->Object.entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>Object.entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >Object : ObjectConstructor
->entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >{} : {}
 
diff --git a/tests/baselines/reference/useObjectValuesAndEntries4.types b/tests/baselines/reference/useObjectValuesAndEntries4.types
index 85810bccd267f..245803a24d435 100644
--- a/tests/baselines/reference/useObjectValuesAndEntries4.types
+++ b/tests/baselines/reference/useObjectValuesAndEntries4.types
@@ -10,9 +10,9 @@ var o = { a: 1, b: 2 };
 for (var x of Object.values(o)) {
 >x : number
 >Object.values(o) : number[]
->Object.values : { <T>(o: { [s: string]: T; }): T[]; (o: any): any[]; }
+>Object.values : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): T[]; (o: any): any[]; }
 >Object : ObjectConstructor
->values : { <T>(o: { [s: string]: T; }): T[]; (o: any): any[]; }
+>values : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): T[]; (o: any): any[]; }
 >o : { a: number; b: number; }
 
     let y = x;
@@ -23,8 +23,8 @@ for (var x of Object.values(o)) {
 var entries = Object.entries(o);
 >entries : [string, number][]
 >Object.entries(o) : [string, number][]
->Object.entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>Object.entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >Object : ObjectConstructor
->entries : { <T>(o: { [s: string]: T; }): [string, T][]; (o: any): [string, any][]; }
+>entries : { <T>(o: { [s: string]: T; } | { [n: number]: T; }): [string, T][]; (o: any): [string, any][]; }
 >o : { a: number; b: number; }